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TLS Online TPP Program

#Question id: 3984

Which of the following statements about regulation of the lac operon is true?

#Unit 3. Fundamental Processes

  1. Glucose in the growth medium decreases the inducibility by lactose.

  2. Glucose in the growth medium does not affect the inducibility by lactose.

  3. Glucose in the growth medium increases the inducibility by lactose.

  4. Its expression is regulated mainly at the level of translation.

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TLS Online TPP Program

#Question id: 31348

#Unit 1. Molecules and their Interaction Relevant to Biology

Which one of the following is not correct statement?
TLS Online TPP Program

#Question id: 18855

#Unit 13. Methods in Biology

to elute target proteins from an affinity chromatography matrix, which of the following conditions would be the most appropriate?
TLS Online TPP Program

#Question id: 164

#Unit 1. Molecules and their Interaction Relevant to Biology

The uncommon amino acid selenocysteine has an R group with the structure —CH2—SeH (pKa = 5).  In an aqueous solution, pH = 7.0, selenocysteine would:
TLS Online TPP Program

#Question id: 28282

#Unit 5. Developmental Biology

In sea urchins, which of the following protein plays a second role as a  fusogenic protein? 
TLS Online TPP Program

#Question id: 27011

#Unit 10. Ecological Principles

In the population, one species undergo loss and another species is neither gain nor loss, this type of interaction is___